Release 0.1.4: add GitHub Release asset attachments

Pure tooling release on top of 0.1.3. The library code is unchanged;
only the release workflow grew a new github-release job that attaches
every built artefact to the GitHub Release page so users have direct
download links next to the source archives:

- Python wheels (5 platforms) + sdist
- Native Node bindings (linux-x64-gnu, darwin-x64, darwin-arm64, win32-x64-msvc)
- npm-pack tarballs for the main wickra package, every per-platform
  subpackage, and wickra-wasm
- Cargo .crate files for wickra-core, wickra-data, wickra

The job runs at the end of the release pipeline and also accepts
workflow_dispatch so future asset-only fixups don't require a version
bump.

bindings/node/package.json

@@ -1,6 +1,6 @@
 {
   "name": "wickra",
-  "version": "0.1.3",
+  "version": "0.1.4",
   "description": "Streaming-first technical indicators: incremental, fast, install-free. Node bindings powered by Rust.",
   "author": "kingchenc <kingchencp@gmail.com>",
   "main": "index.js",
@@ -45,10 +45,10 @@
     "node": ">= 16"
   },
   "optionalDependencies": {
-    "wickra-linux-x64-gnu": "0.1.3",
-    "wickra-darwin-x64": "0.1.3",
-    "wickra-darwin-arm64": "0.1.3",
-    "wickra-win32-x64-msvc": "0.1.3"
+    "wickra-linux-x64-gnu": "0.1.4",
+    "wickra-darwin-x64": "0.1.4",
+    "wickra-darwin-arm64": "0.1.4",
+    "wickra-win32-x64-msvc": "0.1.4"
   },
   "scripts": {
     "build": "napi build --platform --release",